1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.util;
24  
25  import java.util.Comparator;
26  
27  /**
28   * <a href="KeyValuePairComparator.java.html"><b><i>View Source</i></b></a>
29   *
30   * @author Brian Wing Shun Chan
31   */
32  public class KeyValuePairComparator implements Comparator<KeyValuePair> {
33  
34      public KeyValuePairComparator() {
35          this(true);
36      }
37  
38      public KeyValuePairComparator(boolean asc) {
39          this(true, asc);
40      }
41  
42      public KeyValuePairComparator(boolean byKey, boolean asc) {
43          _byKey = byKey;
44          _asc = asc;
45      }
46  
47      public int compare(KeyValuePair kvp1, KeyValuePair kvp2) {
48          if (_byKey) {
49              String key1 = kvp1.getKey();
50              String key2 = kvp2.getKey();
51  
52              if (_asc) {
53                  return key1.compareTo(key2);
54              }
55              else {
56                  return -(key1.compareTo(key2));
57              }
58          }
59          else {
60              String value1 = kvp1.getValue();
61              String value2 = kvp2.getValue();
62  
63              if (_asc) {
64                  return value1.compareTo(value2);
65              }
66              else {
67                  return -(value1.compareTo(value2));
68              }
69          }
70      }
71  
72      private boolean _byKey;
73      private boolean _asc;
74  
75  }